Westinghouse WBRU 80W Series Installation, Start-Up And Maintenance Instructions page 49

CONNECTOR
NO. OF LOCATION
CN9
65001WS-12
CN6
LW6A4-03
CN1
SMW250-03
CN4
LWD1140-06
CN8
SMW250-04
CN11
LWD1140-16
Table 20 – Boiler Wiring 1
PIN BOARD SILK
1
2 L
3 CP1
4 IT
5 L(HT)
6 GV
7
8 N
9-12 N
1
CP2/3WAY
3
1
2
3
RS-485
4
5
1
2
3
FAN
4
5
6
1
2
MCU ISP
3
4
1
HWL
9
2
LWL
10
3
HD
11
4
TH
12
5
APS
13
6
EL
14
7
BL
15
8
HL
16
Figure 40 – Line Voltage Wiring Detail
DESCRIPTION
GROUND
Power Supply Line
Boiler Pump Power Supply (Live)
Ignitor Power Supply
CH / System Pump Power Supply (Live)
Gas Valve Power Supply
-
Boiler Pump Power Supply (Neutral)
Power Supply (Neutral)
DHW Pump Power Supply (Live)
DHW Pump Power Supply (Neutral)
RS485 +
RS485 -
-
Connection
RS485 +
RS485 -
NOT USED
GND
VDD
Fan power (start coil)
Fan power (end coil)
Fan speed feedback signal
GND
ISP / Reset Port
ISP TOOL0 Data Port
VCC
NOT USED
Water Level Sensor
Central Heating Demand (T/T)
Connect to the Display Control
Flue Air Pressure Switch
Low Water Cutoff (External)
Burner High Limit
Condensate APS
HT SELV
HT (120V~) AC
Cascade
SELV (5V) DC
SELV (14V) DC
SELV (8-26VAC)
SELV (14V) DC
SELV (5V) DC
SELV (12V~) AC
SELV (5V) DC
SELV (14V) DC
WHL-032 REV. 6.2.16
49
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